T1-E1 Fiber Modem MM or SM

TC1630R T1-E1 Fiber modem Standalone or Rack mount

T1/E1 Fiber Optic Modems
(Model TC1630R/S)

  • No Jitter

  • AMI/B8ZS/HDB3 Line Codes

  • RJ45 (RJ48C) & Detachable Terminal Block Connectors

  • Distances up to 80 km

  • 22 Diagnostic LEDs

  • Multimode & Single Mode (850/1300/1550nm)

  • Built-in Power Redundancy

  • Optical Redundancy (optional)

  • 12/24/-48VDC, 115/230VAC Power

  • Local & Remote Loopback

  • Local Dry Contact Alarm Relay
  • High Temperature (-20°C to 70°C) Version Optional


TC1630S Standalone Unit

TC1630R Rack-mount Cards

(Click on images to enlarge)


The TC1630R/S Fiber Optic T1/E1 Modem is typically used to link Channel Banks, PBX's, and M13 Multiplexers to DSX-1 Cross Connects.  It is also used to link Customer Premises Equipment to CSU/DSUs and with metallic medium T1/E1 multiplexers to transmit over fiber optic cable.

Intended as a highly reliable link between two T1/E1 devices, the TC1630R/S T1/E1 Fiber Optic Modem is available rack mount or standalone, in both multimode and single mode (850/1300/1550nm) versions.

The TC1630R/S provides a wide variety of innovative and standard features to benefit its users. Innovative features include Terminal Block and RJ-45 connectors, “hot-swappable” cards, 22 diagnostic LEDs  long distance version to 80km (1550nm, Single Mode), and an extreme temperature (-20oC to 70oC) version (TC1630T).

Standard features include Multiple Power Options (12/24/-48VDC & 115/230VAC), No Jitter, Power Redundancy, Optical redundancy (optional), Local & Remote Loopback, Low Current Consumption (200mA), Local Dry Contact Alarm Relay and a replaceable Line Interface Module.

The 22 different diagnostic LED functions include all 1’s detection, Power Alarm, T1/E1 Signal Loss (local & remote ends), BPV violations, and Sync Active. Eight DIP switches, accessible from the front panel, provide line settings for line code, line length, local loopback or remote loopback.  An intelligent line code setting switch is provided to eliminate potential user confusion, such as mismatching a line code/line length setting.

The TC1630R/S is transparent to the framing format and supports AMI, B8ZS and HDB3 line codes and DSX-1 (T1) cross connect distances from 0 to 655 feet.  It includes an internal elastic buffer to remove jitter from transmit data.

The TC1630R/S is compatible with all popular sizes and types of fiber optic cable.  Fiber optic connectors are ST or FC.  Electrical connectors are detachable Terminal Blocks and RJ45 (RJ-48C). 

The TC1630R Card version is used with the TCRM192 Rack Mount Card Assembly which can hold up to 10 modems.  Cards can be removed or installed under power (“hot-swappable”).  Two TC1630R Modems can be used with the TCRM196 19” 1 “U” High Rack-mount Card Cage.


Note: TC1630R/S is 100% compatible with the TC1620R/S, its predecessor.


Data Rates
T1 1.544 Mbps
E1 2.048 Mbps
Transmitter ELED or LASER*
Receiver PIN Diode
Wavelength 850nm, 1300nm Multimode
1300nm, 1550nm Single Mode
Fiber Optic Connectors ST, FC or SC
Loss Budget*
(850nm, 1300nm, 1550nm)
Multimode (62.5/125µm): 15dB
Single Mode (9/125µm): 15dB
(Optional: 25dB and 30dB)
Interface T1 or E1 (G.703)
T1 Connector (100 Ohm) Terminal Blocks and RJ-45F (RJ-48C)
E1 Connector (120 Ohm) Terminal Blocks and RJ-45F
E1 Connector (75 Ohm) Terminal Blocks and BNC Female Cable Adapter
Bit Error Rate 1 in 1010 or better
Dry Contact Normal Open
Visual Indicators
System Status, PWR A, PWR B, Vcc, ALARM, RMT, LOC
T1/E1 Status SYNC, LAIS, LLOS, RLOS, AMI, B8ZS, HDB3, BPV, CSU, Line Length (5 LEDs)
Diagnostic Functions Local and Remote Loopback
Standard 12VDC @ 200mA
Optional 24VDC, -48VDC, or 115/230VAC (with external power cube)
Operating -10° to 50°C
Hi-Temp (optional) -20° to 70°C
Storage -40° to 90°C
Humidity 95% non-condensing
Physical (Standalone/Wallmount Unit)
Height (3.53 cm) 1.39"
Width (18.13 cm) 7.14"
Depth (16.59 cm) 6.53"
Weight (192 gm) 5.44 oz


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